Apart from an industry, whose origin is far back, these limestone formations have given rise to the creation of caves with stalactites, stalagmites and many mysteries to be solved. Throughout history these deposits have been exploited intermittently according to the demand and the price of the minerals extracted in the surroundings of La Calera.
Not only local, there are also others… mainly marbles, the most abundant being black. This valuable mineral was exploited until the 18th century by the Hieronymite community of the Royal Monastery of Guadalupe. Almost all the marble in the Virgin’s dressing room is of alien origin, especially in the arch of black stones that give access to this magnificent room.